Locking device for telephone-receivers.



W. W. BYTHINER.

LOCKING DEVICE FOR TELEPHONE RECEIVERS. APPLTOATIOR FILED NOV. 11, 1912.

L068,627. PatentedJuly 29,1913.

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bl UFFT@EQ WILLIAM W. BYTHINER, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOROF ONE- HALF TO ELI D. BERNHEIM, OF PHILADELPHIA, PENNSYLVANIA.

LOCKING DEVICE FOR TELEPHONE-RECEIVERS.

Specification of Letters Patent.

Patented July 29, 1913.

Application filed November 11, 1912. Serial No. 730,615.

To all whom it may concern:

Be it known that 1, WILLIAM W. BY'rnI- ran, a citizen of the UnitedStates, residing at Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and useful Improvementsin Locking Devices for Telephone- Receivers, of which the-following is aspecification.

My invention relates to a device for looking telephone receivers and theobject of my invention is to construct a device which may be locatedadjacent to a telephone instrument for locking the telephone receiverduring the absence from the telephone of the party for whom thetelephone message is intended.

A further object of my invention is to provide coin cont-rolledmechanism for releasing the locking device so that the re rciver may beremoved from the locking device by inserting a coin; thus providing amethod of collecting messenger toll charges for calling persons to a paystation tele phone.

In the accompanying drawings: Figure 1, is a perspective view of mylocking device for telephone receivers, showing a receiver lockedtherein; Fig. 2. is a plan view of Fig. 1 with the cover of the casingremoved, showing the parts in the locked position, the receiver notbeing shown: Fig. 3, is a transverse vertical section on line 3-3, Fig.2: Fig. 4. is a longitudinal vertical section on line 44, Fig. 2,showing the parts in the unlocked position and the receiver in placeready to be locked, and Fig. 5, is a horizontal section on line 5-5,Fig. 4, the receiver being omitted.

Referring to the drawings in which like references refer to like parts,1 represents the casing comprising upper and lower compartments 2 and 3,separated by a plate 5, which-forms a bearing-plate for the lockingmechanism.

The receiver 7, is clamped between a movable clamping member and a fixedclamping member. The fixed clamping member consists of two curvedvplates 9, and 10 rigidly secured upon the upper side of the caringplate5, and immediately in front of the front wall of the casing forming theupper compartment 2, which is smaller than the lower compartment 3, ofthe casing.

The movable clamping member consists of two curved plates 12, and 13,which project upwardly from the forward edge of the movable disk 14, ofwhich said clamping plates 12 and 13 form a art, vor to which they arerigidly attached. The movable member is carried y posts or bolts 16. and17, rigidly secured to the disk 14. Said posts 16 and 17 extend throughan elongated opening 19, formed in the bearin -ple.te 5, and are rigidlysecured in the sliding-bar 20, which is located upon the under surfaceof the bearing-plate 5. The inner end of the sliding-bar 20, is held inposition by a post 29, which extends through an elongated opening 23, inthe bearing-plate 5, and the post 22 is secured in a guide-plate 24,which slides upon the upper surface of the bearingplate 5, and islocated within the upper compartment 2 of the casing.

The posts 16 and 17 are provided with collars 18, which are larger indiameter than the width of the opening 19, formed in the bearing-plate5. Said collars l8, slide upon the upper, surface of the bearing- )late5 and prevent the posts from falling t rough the said opening 19. Thecollars 18, are of suiticient thickness to separate the disk 14, fromthe bearing-plate 5, to allow the disk- 14, to move freely.

A spring 26, is provided to normally hold the sliding-bar 20, and themovable clamping member in the forward or open position, as shown inFigs. 4 and 5. The said spring 26, is rigidly secured at one end by thebolt 27, which enters the inner side of the bearing-plate 5, and theopposite end of the spring 26, presses against a pin 28, depend ing fromthe sliding-bar 20, and pushes the latter forward and normally holds theclamping members open.

When the clamping members are open, as shown in Figs. 4 and 5, atelephone receiver may be placed in a vertical position upon the disk14, and the clamping plates 12, and 13, will embrace the enlarged end ofthe rer'tlttl. The receiver is held upon the disk ll 1; said clampingplates 12 and 13 and by a spring-catch 30, located at the opposite sideof the disk 14-. from the clamping plates 12 and 13. The object of thespring-catch :10. being to prevent the receiver from tilting ver andfalling off the disk when the latter is forced forward by the action ofthe spring 26. upon the sliding-bar 20. which opens the clampingmembers.

Adjacent to the spring-catch 30, is an upright plate 32 which is rigidlyattached to or made part of the disk 14. The said upright plate 32,being rigid, the receiver may be pushed against it to force the disk 14carrying the movable clamping member into the locked position. When themovable clamping member is forced into the locked position as shown inFigs. 1, and 2, the inner edge of the enlarged end of the receiver willbe forced under the curved plates 9, and 10, forming the fixed clampingmember, and the receiver will be securely held between the clampingmembers.

The sliding-bar 20, carries an upwardly projecting post 35, locatedadjacent to its inner end and said post extends up through an elongatedopening 36, formed in the bearing-plate 5, as shown in Figs. 2 and 5.The post 35, is engaged by a pawl 38, which holds the sliding-bar 20, inthe locked position, as shown in Fig. 2. The pawl 38, is pivoted at oneend to the bearing-plate 5, and a spring 40, is provided to hold thepawl 38, in engagement with the post 35, carried by the sliding bar 20.A stop 41, upon the bearing-plate 5, is also provided to limit themovement of the pawl 38, when it is not in engagement with the post 35.The pawl 38, is concealed within the upper compartment 2 of the casingand is inaccessible, so that the clamping members which lock thereceiver can only be released by disengaging the post- 35, of thesliding-bar 20, from the pawl 38.

The pawl 38, may be operated to disengage the post 35, by means ofa coincontrolled mechanism consisting of the chute 45, which conveys the cointo a position in.

alinement with a lug, 39, upon the pawl 38. The coin rests upon the rearedge of the guide-plate 24, of the sliding-bar 20, which prevents thecoin from falling into the drawer 6, of the lower compartment 3, of thecasing. The coin is held in a vertical position by the walls of thechute 45, and the coin may be pushedagainst the lug 39, on the pawl 38by pushing the outer end of the shaft until the pawl 38, releases thepost 35 on the sliding-bar 20, which latter will be forced forward bythe spring 26, and the clamping members will be separated so that thereceiver can be removed from the locking device.

Having thus described my invention, I claim and desire to secure byLetters Patout:

1. In a device of the characterdescribed, the combination of a.telephone receiver, a movable disk, a clamping member. upon one side ofsaid disk adapted to'engage the enlarged end of the receiver when. thelatter is resting upon said disk, a spring catch upon the opposite sideof the said disk adapted toengage the enlarged endiot the saidreceiver,- clamping'members secured in a fixed position and means forlocking, the

clamping members to secure said receiver between said. clamping members.

2. Ina device of the characterdescribed, the combination of abearing'plate, a clamping member secured thereon. a sliding bar, aclamping member upon said. sliding-bar, and a pawl to automaticallyengage said sliding-bar.

3. In a device of the characterdescribed, the combination of a bearingplate. a clamping member secured thereon, a sliding-bar, a clampingmember'upon. said sliding-bar, a pawl to automatically engage saidslidingbar, and a spring to act upon said slidingbar to normallyseparate said clamping members. Y

4. In a device of the character described, the combination of abearing-plate, clamping members secured upon said bearing, plate, a diskslidably mounted upon said bearing-plate, clamping members upon one sideof said disk, a rigid vertical plate located opposite said clampingmembers upon the disk, a spring catch upon said disk, locking mechanismto engage said sliding-plate, and connecting membersbetweensaidsliding-plate and said disk.

5. In a device of the character described, the combination of abearing-plate, clamp ing members secured upon said bearingplate, a diskslidably mounted upon said bearing-plate, a sliding-bar below saidbearing-plate posts connecting said disk with said sliding-bar, saidbearing-plate having elongated openings formed therein to receive saidposts, a clamping member upon said disk, a spring to act upon saidslidin bar to separate said clamping. members an Locking mechanism toengage saidv locking 6. In a device of the character described, thecombination of a bearing-plate, two curved clamping plates rigidlysecured to said bearing-plate, a disk slidably mounted upon saidbearing-plate, two curved clamping plates upon said disk oppositelydisposed from said fixed clamping-plates, and locking mechanism forsecuring said clamping plates in the contracted. position.

7. In a device of the character described, the combination of a casinghaving upper and lower compartments formed therein, a I clamping membersin' the contracted po- 10 hearing-plate separating said compartments, 1sition.

said upper compartment being smaller than I In testimony whereof I, haveaflixed my the lfiawer compartment, a fixed clamping signature inpresence of two witnesses.

mem er upon said bearing plate in front of i the upper compartment ofsaid casing, a; WILLIAM BYTHINER' clamping member slidably mountedabove! \Vitnesses:

said bearing-plate, and locking mechanism Immusxmc (iOLDBACHER,contained within the casing for locking said ARTHUR Gr. PENTQN.

